3026 results about "Aromatic hydrocarbon" patented technology

The invention provides a method for determining hydrocarbon components in mixed aromatic hydrocarbons by using comprehensive two-dimensional gas chromatography-mass spectrometry. The method comprises the following steps: optimizing a target function to make a chromatographic peak signal obtained by a separation model accord with a chromatographic separation process mechanism, fully utilizing complementary information of chromatography and mass spectrometry, improving separation precision, and guiding analysis of complex aliasing peaks; analyzing overlapped chromatographic peaks determined by principal component analysis by adopting the established separation model to obtain a chromatographic peak signal representing a single component after separation, and matching the chromatographic peak signal with a corresponding mass spectrum; in combination with a single chromatographic peak signal and a mass spectrum obtained through separation, according to characteristic fragments and chromatographic retention time in the mass spectrum, component types corresponding to chromatographic peaks are judged, and characterization of the composition of the mixed aromatic hydrocarbon is achieved; a separated single chromatographic peak is subjected to quantitative analysis, the content of each component is calculated by adopting an external standard method in contrast with a standard curve, a quantitative result of the mixed aromatic hydrocarbon sample is obtained, and the measurement precision of the mass fraction of each hydrocarbon component is improved.

The invention discloses a silica gel material and a preparation method thereof, a silica gel tube, an implant and a preparation method and application thereof. The silica gel material comprises the following components in parts by weight: 100 parts of R-vinyl polysiloxane; 10 to 80 parts of a reinforcing agent; 0.000002 to 1 part of a catalyst; wherein R in the R-vinyl polysiloxane is substituted or unsubstituted straight-chain alkane or branched alkane of C1-C5, and substituted or unsubstituted aromatic hydrocarbon of C6-C20, and R in the R-vinyl polysiloxane is substituted or unsubstituted straight-chain alkane or branched alkane of C1-C5, or substituted or unsubstituted aromatic hydrocarbon of C6-C20; the content of vinyl in the R-vinyl polysiloxane ranges from 0.1 mol% to 0.5 mol%; the components contained in the reinforcing agent comprise hydrophilic groups; the content of Si-H groups in the hydrogen-containing silicone oil is 0.18 mol% to 1.6 mol%; the molar ratio of the Si-H group in the hydrogen-containing silicone oil to the vinyl group in the R-vinyl polysiloxane is (0.5-10): 1; optionally, the composition also comprises an inhibitor. According to the silica gel material provided by the invention, the permeability of water to the silica gel tube is increased while the mechanical property is met, so that the release amount of a medicine is increased, and the defect of low in-vitro release degree in the prior art is improved.

The invention relates to the technical field of hydrogen storage and release, and discloses a cyclic hydrogen storage and release system based on aromatic cycloalkane reaction, which comprises a hydrogenation reaction unit, a dehydrogenation reaction unit, a gas-liquid separation and compression unit and an adsorption and purification unit which are sequentially connected through pipelines, the hydrogenation reaction unit, the dehydrogenation reaction unit and the gas-liquid separation and compression unit are respectively connected with the heat exchange unit; the hydrogen storage function and the hydrogen desorption function are integrally designed, the microwave heat supply dehydrogenation reactor is designed for the dehydrogenation reaction link with high energy consumption, and compared with the prior art, the microwave heat supply dehydrogenation reactor has the advantages that the heat transfer resistance is reduced, the reaction efficiency is improved, and the energy loss is reduced. The designed gas-liquid separation and adsorption purification technology is coupled, only one compressor is used in the whole process, the purification process is effectively simplified, the operation is simple and convenient, the equipment cost and the hydrogen purification cost are reduced, and the hydrogen yield and the hydrogen storage carrier cyclic utilization rate are improved. The system has the advantages of high hydrogen storage and release efficiency, small system size, high mobility and the like.

The invention discloses a method for preparing fuel from waste polyolefin through noble-metal-free low-temperature aromatization, which comprises the following steps: in the atmosphere of synthesis gas, carrying out catalytic cracking on polyolefin serving as a raw material by adopting a binary mixed catalytic system to obtain aromatic hydrocarbon; the binary mixed catalytic system comprises Zr-ZnO and a molecular sieve; the catalytic cracking temperature is less than or equal to 300 DEG C. According to the low-temperature aromatization method disclosed by the invention, methanol is generated in situ through the synthesis gas, and the methanol and olefin generated by polyolefin cracking are subjected to Prins reaction, so that the aromatization reaction can be realized at the pyrolysis temperature far lower than that in the prior art, precious metals are not needed, the additional value and the application range of a plastic recovery product are greatly enhanced, and the method is suitable for industrial production. And the cost of the recovery process is reduced.

The invention relates to the technical field of ZSM-5 molecular sieve preparation, and provides a high-crystallinity aluminum-rich ZSM-5 molecular sieve as well as a preparation method and application thereof. According to the preparation method of the high-crystallinity aluminum-rich ZSM-5 molecular sieve provided by the invention, after the second aluminum source is added, secondary crystallization is carried out, so that the skeleton composition control of the ZSM-5 molecular sieve is realized, the technical bottleneck that the high-crystallinity aluminum-rich ZSM-5 molecular sieve is difficult to directly synthesize is solved, the lower limit of a Si / Al specific phase region of an artificial in-situ synthesized molecular sieve is broken through, and the preparation method is simple and convenient. The method effectively controls crystal parameters, improves production efficiency and realizes precise construction of the high-crystallinity aluminum-rich ZSM-5 molecular sieve, so that the microporous crystallinity of the molecular sieve is enhanced, the acid distribution of the molecular sieve is optimized, the metastable state surface active acid center distribution of the molecular sieve is greatly enriched, and the molecular sieve has good aromatic hydrocarbon conversion performance.

The invention belongs to the technical field of carbon black post-treatment, and particularly relates to a method for preparing high-structure-degree carbon black through plasma sintering. In order to solve the problem that the structural degree of furnace-process carbon black is limited by a reaction furnace in the prior art, the invention provides the method for preparing the high-structural-degree carbon black by utilizing plasma sintering, and the structural degree of the carbon black is improved by utilizing a two-step method. Part of the aromatic hydrocarbon compound is left at the contact part of the carbon black to provide a carbon source for the next step of micro-sintering; in the second step, high-temperature plasma is adopted for heating, the carbon source can be rapidly carbonized in a short time, the micro-sintering phenomenon is generated among the carbon black, the size of a carbon black aggregation structure is increased, and therefore the structural degree is improved, and compared with traditional high-temperature heat treatment, the method can reduce energy consumption and consumed time in the treatment process to a greater extent.

A class of aromatic hydrocarbon receptor modulator compounds represented by the following formula I, or respective optical isomers, deuterated compounds, prodrugs or pharmaceutically acceptable salts thereof, and a preparation method therefor and the use thereof. The compounds can be used as aromatic hydrocarbon receptor modulators to regulate the activity of aromatic hydrocarbon receptors in vivo, which is of great significance for the treatment of related diseases such as immune diseases, inflammatory diseases, infections, skin diseases, osteoporosis, cancers and neurodegenerative diseases.

The invention belongs to the field of petrochemical engineering high-end carbon materials, and particularly relates to a method for preparing a high-end carbon material raw material by supercritical extraction of oil slurry, and the method comprises the following specific preparation steps: S1, uniformly mixing the oil slurry with a diluting solvent, and performing countercurrent contact extraction with a main solvent in an asphalt extraction tower to obtain a byproduct asphalt; s2, continuously extracting the raffinate phase in an aromatic oil extraction tower to obtain aromatic oil; and S3, continuously extracting the raffinate phase in the supercritical light deoiling tower to obtain a byproduct alkane oil. In the extraction process, isopentane is selected as an extraction solvent, and the temperature and pressure of an extraction tower are accurately controlled, so that asphaltene, ash and other impurities in the asphalt are effectively stripped, 3-5 ring aromatic hydrocarbon in the asphalt is extracted into aromatic hydrocarbon oil, the yield of the asphalt is reduced to 6-9%, the yield of light oil and heavy oil is effectively improved, and the production cost is reduced. The needle coke prepared from the aromatic hydrocarbon oil obtained by the method disclosed by the invention can reach the standard of Japan water island X-grade coke.

The invention discloses a method for preparing aviation kerosene (aromatic hydrocarbon components) from biogas. The method comprises the following steps: separating biogas to obtain methane and carbon dioxide, and then carrying out a two-step chemical reaction process. The method comprises the following steps: firstly, carrying out dehydrogenation aromatization on methane to obtain aromatic hydrocarbon mainly containing benzene and hydrogen, and separating methane for circulating dehydrogenation aromatization reaction; then hydrogen and aromatic hydrocarbon are merged into carbon dioxide, and the polysubstituted aromatic hydrocarbon is obtained by coupling methanol synthesis and alkylation reaction of benzene without external source hydrogen. The method provided by the invention avoids the problem of low selectivity of aviation kerosene fraction hydrocarbons in a route of Fischer-Tropsch synthesis after methane and carbon dioxide are converted into synthesis gas. According to the conversion method for highly coupling the reaction processes, a new route for producing sustainable aviation kerosene from biogas is developed.

The invention relates to an aromatic hydrocarbon isomer adsorbent containing a modified X-type molecular sieve. The outer surface area of the modified X-type molecular sieve is 9.5-19m < 2 > / g, and the sum of the pore volume of mesopores and the pore volume of macropores is 6%-18% of the total pore volume. The p-xylene adsorbent comprises 88-95% by mass of a modified X-type molecular sieve, 4-11% by mass of a crystal transformation X-type molecular sieve and 1-3% by mass of a matrix. The invention also relates to a preparation method of the adsorbent and application of the adsorbent in adsorption separation of p-xylene from mixed C8 aromatic hydrocarbons.

The invention provides a Pt-Sn bimetallic catalyst and a preparation method and application thereof.The preparation method comprises the steps that 1, a Y molecular sieve is placed in a mixed solution of KOH and methyl alcohol, centrifugation and washing are conducted till the Y molecular sieve is neutral after stirring, drying and roasting are conducted, and a non-acid KY molecular sieve is obtained; the silica-alumina ratio of the Y molecular sieve is 3-100; 2) taking the non-acidic KY molecular sieve as a carrier, and loading Sn by adopting an atomic layer deposition technology to obtain a Sn-modified non-acidic KY molecular sieve; and 3) loading Pt by using the Sn-modified non-acidic KY molecular sieve as a carrier and adopting an atomic layer deposition technology to obtain the Pt-Sn bimetallic catalyst. According to the preparation method provided by the invention, spatial distribution of Pt and Sn is accurately regulated and controlled by combining an atomic layer deposition technology, so that the electronic state of Pt species is adjusted, alkane is promoted to be dehydrogenated into an olefin intermediate, and the aromatization catalytic activity and the aromatic hydrocarbon selectivity of alkane are improved.

The invention provides a preparation method and application of a catalyst for methane normal hexane co-aromatization, a simple in-situ hydrothermal synthesis method is adopted, platinum and nickel are dispersed in a ZSM-5 molecular sieve, and a metal packaging type NiPt-coated ZSM-5 catalyst is synthesized. When the catalyst is applied to methane and normal hexane co-aromatization reaction, the catalyst shows relatively high methane conversion rate and aromatic hydrocarbon selectivity. The molecular sieve packaging mode not only can improve the dispersity of the active component so as to improve the capability of activating methane, but also can improve the high-temperature stability of the active component and prolong the service life of the catalyst, and can effectively solve the problems of high reaction temperature and poor catalyst stability in the existing methane aromatization technology. And the method has a good practical application prospect.

An ion exchange membrane includes a resin composition containing a side chain heteroaromatic resin having a structural unit represented by general formula 1, and a cation exchange resin. (In the formula, R1, R2, and R3 may be the same or different and each represents a hydrogen atom, a substituted or unsubstituted aliphatic hydrocarbon group having 1-10 carbon atoms, or a substituted or unsubstituted aromatic hydrocarbon group having 6-10 carbon atoms, R4 represents a directly bonded, substituted or unsubstituted divalent aliphatic hydrocarbon group having 1-10 carbon atoms, or a substituted or unsubstituted divalent aromatic hydrocarbon group having 6-10 carbon atoms, and R3 represents a hydrogen atom, a substituted or unsubstituted aliphatic hydrocarbon group having 1-10 carbon atoms, or a substituted or unsubstituted divalent aromatic hydrocarbon group having 6-10 carbon atoms. Hc represents a substituted or unsubstituted heteroaromatic group having 4-30 carbon atoms, said heteroaromatic group having at least one nitrogen atom in a heteroaromatic ring structure and comprising a 5-membered ring and / or a 6-membered ring structure. > # imgabs0 #

The invention discloses a preparation method and application of a composite catalyst for preparing aromatic hydrocarbon through hydrogenation of carbon dioxide, the composite catalyst is formed by compounding an iron-based catalyst and an HZSM-5 molecular sieve, the main active components of the iron-based catalyst are Fe3O4 and iron carbide, the preparation method comprises the steps of preparation of modified ferric oxide, preparation of modified ferroferric oxide, preparation of the iron-based catalyst and the like. The preparation method provided by the invention improves the adsorption activation capability of carbon dioxide on the composite catalyst and the anti-poisoning stability of the composite catalyst, and also improves the aromatic hydrocarbon selectivity of the product.

The invention relates to a method and a system for producing low-carbon olefin and light aromatic hydrocarbon through catalytic cracking. The method comprises the following steps: (1) carrying out contact reaction on raw oil and a catalytic cracking catalyst in a constant linear velocity fluidized bed reactor to obtain an oil agent mixture; (2) separating the oil agent mixture to obtain reaction oil gas and a spent catalyst; and (3) separating the reaction oil gas to obtain a low-carbon olefin component, a gasoline component and an oil slurry component. In a constant-linear-speed fluidized bed reactor, light petroleum hydrocarbons such as diesel oil are contacted with a catalytic cracking catalyst with a high silica-alumina ratio, and self-heat balance is maintained through regeneration flue gas circulation to produce low-carbon olefins, light aromatic hydrocarbons and the like. According to the method disclosed by the invention, heavy oil such as naphtha, wax oil and residual oil can be processed while light hydrocarbon such as diesel oil is processed, the conversion rate of the diesel oil is high, self-heating balance can be realized, the problem of excessive diesel oil production capacity of a refinery plant is solved, and the processing benefit of crude oil is also improved.

The invention provides a surface treatment method of a lithium metal pole piece. The invention relates to a surface treatment method of a lithium metal pole piece, which comprises the following steps: reacting the lithium metal pole piece in an organic solvent solution of an aromatic hydrocarbon complexing agent in an inert atmosphere, then taking out the lithium metal pole piece, and cleaning; placing the cleaned lithium metal pole piece in reactive gas for reaction to obtain a modified lithium metal pole piece; wherein the aromatic hydrocarbon complexing agent is a complexing agent which can be subjected to a complexing reaction with lithium, and the reactive gas comprises an oxidizing gas. The original inorganic layer with rough surface appearance and non-uniform component distribution of the lithium metal pole piece is changed into the flat lithium-containing inorganic layer, so that the impedance is reduced, and the service life of the battery is prolonged.

The invention relates to the technical field of lithium ion batteries, and particularly provides a preparation method of a graphite negative electrode material and the graphite negative electrode material. The problems that an existing method for improving the rate capability of a graphite negative electrode is complex in process and limited in improving effect, and high-temperature storage performance is deteriorated are solved. Therefore, the preparation method of the graphite negative electrode material comprises the following steps: S1, mixing aromatic hydrocarbon oil, thiophene and medium-high sulfur asphalt, and performing heat treatment to obtain vulcanized asphalt; s2, carrying out delayed coking on the vulcanized asphalt to obtain high-sulfur green coke; and S3, crushing the high-sulfur green coke, and then carrying out graphitization treatment to obtain the graphite negative electrode material. The graphite negative electrode material prepared by the preparation method provided by the invention has good rate capability and high-temperature storage performance.

The invention relates to a heat transfer printing receiving sheet and a preparation method thereof, and belongs to the technical field of soft label printing. The heat transfer printing receiving piece comprises a printing layer, a heat insulation layer, a base material and a back coating layer which are sequentially arranged from top to bottom. The back coating is prepared from the following raw materials in parts by weight: 13 to 16 parts of first resin, 2 to 3 parts of filler, 0.1 to 0.5 part of polyethylene glycol and 0.01 to 0.05 part of lithium chloride; the heat insulation layer comprises the following raw materials in parts by weight: 9-11 parts of an adhesive and 4-7 parts of hollow particles; the printing layer is prepared from the following raw materials in parts by weight: 19 to 22 parts of second resin, 0.1 to 1 part of aromatic hydrocarbon modified polysiloxane, 0.1 to 1 part of polyethylene glycol and 0.1 to 1 part of polyisocyanate curing agent. The invention also discloses a preparation method of the thermal transfer receiving sheet, and the thermal transfer receiving sheet can prevent thermal fusion between the thermal transfer sheet and the thermal sublimation ribbon even under the condition of high printing speed, is good in demolding property with the thermal sublimation ribbon, is aging-resistant, and can improve the optical density of a printed image.

The invention provides a coal chemical industry wastewater deoiling extraction agent and a preparation method and application thereof, and the coal chemical industry wastewater deoiling extraction agent comprises at least one of petroleum ether, aromatic hydrocarbon compounds and acid ester organic compounds. According to the coal chemical industry wastewater deoiling extraction agent, at least one of petroleum ether, aromatic hydrocarbon compounds and acid ester organic compounds serves as the extraction agent, the extraction capacity of physical extraction is high, the coal chemical industry wastewater deoiling extraction agent has the deoiling and dust removal functions when being used for treating coal chemical industry wastewater, and efficient treatment of oil dust in wastewater can be achieved; secondary pollution such as oily sludge and scum is not generated; meanwhile, the extractant is good in regeneration performance and high in recovery rate, and has the advantage of being repeatedly used after being regenerated; in addition, raw materials such as acid ester organic matters are low in price, safe, stable, wide in source and small in corrosion to equipment, so that the maintenance cost of the equipment is reduced, and the wastewater treatment cost is reduced to the greatest extent.

The purpose of the present invention is to provide a triarylmethane pigment having excellent heat resistance and to provide a colorant for a color filter having good color characteristics by using a coloring composition using the triarylmethane pigment because the heat resistance of a conventional triarylmethane pigment is not sufficient. Provided are a triarylmethane dye represented by general formula (1), a coloring composition containing the dye, a colorant for a color filter, and a color filter. In # imgabs0 # formula (1), R1-R5 represent H, an alkyl group, an aromatic hydrocarbon group, or a heterocyclic group, R6-R10 represent H, a halogen atom, OH, CF3, NO2, CN, an alkyl group, or an alkoxy group, R11-R14 represent H, an alkyl group, or an aromatic hydrocarbon group, and at least one of R8 and R12-R14 represents an alkyl group or an aromatic hydrocarbon group. An represents an anion, and m represents a natural number.

The invention relates to a method for preparing spinnable mesophase pitch and carbon fibers from coal tar fractions, and belongs to the technical field of carbon materials. The method comprises the following steps: distilling and extracting aromatic hydrocarbon fractions in different distillation ranges from coal tar, activating the aromatic hydrocarbon fractions in one or more distillation ranges as raw materials, and carrying out non-catalytic polymerization reaction on one or more activated coal tar fractions and one or more non-activated coal tar fractions at a low temperature, and performing high-temperature polymerization reaction to obtain matrix asphalt, and performing reduced pressure distillation treatment, solvent extraction or inert gas purging to obtain the spinnable mesophase asphalt. The spinnable mesophase pitch has wide-area streamline optical texture distribution, good directional arrangement and orderliness, the mesophase content can reach 100%, the softening point is low, the coking value is high, the ash content is low, and the structure is controllable. The carbon fiber prepared based on the mesophase pitch is short in required oxidation time and has excellent performance.

The invention relates to the technical field of biological medicines, in particular to a preparation method of 18F-DOPA and an F-18 labeled precursor of 18F-DOPA. The structural formula of the F-18 labeled phenolic precursor compound is as shown in a formula I: # imgabs0 #; wherein R1 and R2 are hydroxyl protecting groups; r3 is a leaving group; r4 and R5 are independently hydrogen or an amino protecting group; and R6 is a carboxyl protecting group. The invention provides a simple and efficient < 18 > F-DOPA preparation method, and particularly relates to preparation of < 18 > F-DOPA by constructing a key phenol precursor compound and performing a simple and efficient photocatalytic deoxidation fluorination reaction on aromatic hydrocarbon. The method has the advantages of few steps, high yield, simplicity and convenience in operation, good repeatability and good automatic production potential. The radioactive tracer agent 18F-DOPA synthesized by using the method has high specific activity, high chemical purity and high radioactive purity, and has an important value for clinical popularization of 18F-DOPA.

The invention discloses a perovskite precursor solution containing substituted aromatic ring group sulfonic acid, which comprises a perovskite material, an additive and an organic solvent, the additive is aromatic ring group sulfonic acid with a substituent group or a salt thereof, the aromatic ring is a benzene ring, a naphthalene ring or a pyrene ring, and the substituent group is one or more of H, halogen, C1-C4 alkenyl and C1-C4 alkyl. Polycyclic aromatic hydrocarbon (such as benzene, naphthalene and pyrene) is used as a framework, one sulfonic acid group instead of a sulfonyl group is introduced, and uncoordinated type defect passivation is realized through bonding with Pb < 2 + >; meanwhile, the electron push-pull characteristic of the substituent group is utilized, the Lewis acid-base amphoteric property is exerted, passivation of various types of defects is achieved, anchoring and passivation of multiple sites are achieved, the defects of the perovskite active layer can be remarkably reduced, non-radiative recombination can be reduced, and the performance and stability of the prepared perovskite solar cell in the large-scale preparation process are further improved.

The invention discloses a method for preparing deuterated aza-arene by heterogeneous photocatalytic hydrogen-deuterium exchange, which comprises the following steps: by taking an aza-arene compound as a substrate and an inorganic semiconductor nanomaterial loaded with metal Pd as a photocatalyst, adding a deuterium source, introducing argon for protection, stirring and reacting under the conditions of room temperature and visible light illumination, and synthesizing the deuterated aza-arene. The invention provides a method for preparing deuterated aza-aromatic hydrocarbon by heterogeneous photocatalysis hydrogen-deuterium exchange, which can realize direct hydrogen-deuterium exchange reaction of a series of aza-aromatic hydrocarbon molecules under the driving of visible light at room temperature and normal pressure by taking relatively cheap D2O as a deuterium source, avoids harsh reaction conditions of high temperature and high pressure, is simple and feasible, has mild conditions, and is suitable for industrial production. The method is safe to operate, simple in product separation and easy to realize large-scale production, and provides possibility for large-scale production of deuterated chemicals.

The invention relates to the field of polyolefin catalytic aromatization, and discloses a low-temperature polyolefin aromatization method based on a zeolite-encapsulated metal catalyst, which comprises the following steps: heating and melting a zeolite-encapsulated metal catalyst as a lower bed layer and a mixture of polyolefin plastic and a lamellar ZSM-5 molecular sieve as an upper bed layer to carry out aromatization reaction; the zeolite encapsulated metal catalyst comprises a matrix and metal encapsulated in the matrix, and the matrix is an HZSM-5 molecular sieve. By designing a double-bed series catalytic route, polyolefin is firstly converted into low-carbon olefin, and then olefin aromatization reaction is performed, so that the reaction temperature and the content of heavy aromatic hydrocarbon are reduced; according to the catalyst for catalyzing the olefin aromatization reaction in the lower bed layer, the metal nanoparticles are encapsulated in zeolite crystals, the pore channel confinement effect is exerted to avoid generation of a large-size carbon deposition precursor, the diffusion speed of reactants and product molecules is adjusted to inhibit a deep reaction, a stable catalytic system is formed, and the catalytic activity of the catalyst is improved. The aromatic hydrocarbon yield and the service life of the catalyst can be improved.

The invention is applicable to the technical field of eutectic materials, and provides an organic macrocyclic aromatic hydrocarbon-based eutectic material and a preparation method and application thereof, the eutectic material is a metastable material EtLP6-F4TCNQ alpha, and is prepared by taking oblique tower aromatic hydrocarbon as a subject and electron-deficient 2, 3, 5, 6-tetrafluoro-7, 7, 8, 8-tetracyanodimethyl p-benzoquinone as an object, and carrying out co-crystallization on the oblique tower aromatic hydrocarbon and the 2, 3, 5, 6-tetrafluoro-7, 7, 8, 8-tetracyanodimethyl p-benzoquinone to obtain the organic macrocyclic aromatic hydrocarbon-based eutectic material. And carrying out mechanical grinding on 2, 3, 4, 5, 6, 8-tetracyanodimethyl p-benzoquinone. According to the method, two or more organic molecules are directly mixed and induced to form the eutectic structure through simple mechanical grinding operation, the method is efficient, low in cost and easy for large-scale production, the eutectic material with the metastable structure is prepared, and the metastable structure shows higher sensitivity and faster response speed in gasochromic detection.

The invention relates to the technical field of fluorite flotation reagents, in particular to a preparation method of a fluorite flotation collecting agent. The specific preparation method comprises the following steps: carrying out sulfonation reaction on sulfuric acid and benzene to obtain sulfonation reaction liquid; the method comprises the following steps: by taking oleic acid or acid oil as a raw material, adding sulfonation reaction liquid at 10-20 DEG C, and carrying out stirring reaction; adding alkali liquor to carry out neutralization reaction, controlling the temperature to be less than or equal to 80 DEG C, and adjusting the pH value to be 7-8; and a water phase is separated and removed, and a mixture containing oleate, sulfated oleate, hydroxyl oleate and stearic acid benzene sulfonate is obtained and serves as the fluorite flotation collecting agent. By controlling the proportion of sulfuric acid to benzene and adding oleic acid, on the basis of reducing product benzene residues, the collecting capacity is improved, good selectivity is achieved, and the problem of aromatic hydrocarbon residues existing in a flotation collecting agent prepared from aromatic hydrocarbons such as benzene as raw materials is solved.

The application discloses a thickened oil viscosity reducer for a main viscosity contribution component of colloid and a preparation method thereof. The thickened oil viscosity reducer comprises the following components in percentage by weight: diethylene glycol methyl ether 25-35%, propylene glycol formate 15-25%, dispersant 5-8%, chelating agent 2-4%, anti-coking agent 0.5-1%, anti-swelling agent 1-2% and corrosion inhibitor 1-2%; and the balance is water. The application is a polar + non-aromatic hydrocarbon solvent system; completely avoids high-risk substances such as nonylphenol polyoxyethylene ether, petroleum sulfonate sodium and organic chlorine; is designed in pertinence and can effectively inhibit metal-induced asphaltene bridging; can withstand working conditions from normal temperature to 250 DEG C and up to 300 DEG C; thermal stability is significantly enhanced, and residual carbon after aging is lower than 8%; viscosity reduction efficiency is higher; the system is more stable, flexible in compounding and suitable for field construction.

The invention discloses cardanol basic characteristic mechanical enhanced flame-retardant epoxy resin containing aliphatic amine and a preparation method of the cardanol basic characteristic mechanical enhanced flame-retardant epoxy resin, and belongs to the technical field of flame retardance. The preparation method comprises the following steps: introducing an aldehyde group on a benzene ring of cardanol, and reacting with diamine to form an epoxy resin precursor substance; the preparation method comprises the following steps: fully mixing an epoxy resin precursor substance, epoxy chloropropane, a phase transfer catalyst and an alkaline substance for reaction to obtain cardanol basic intrinsic flame-retardant and mechanically-reinforced epoxy resin; the problems that raw materials of traditional bisphenol A type epoxy resin are non-renewable, the brittleness is large due to the molecular structure, flammability is caused, and the flame retardant property and the mechanical property cannot be considered at the same time are solved, biomass cardanol which is wide in source and low in cost is used as the raw material, and flexibility of an aliphatic chain and rigidity of aromatic hydrocarbon are combined; the Schiff base structure improves the flame-retardant efficiency of the matrix and also improves the mechanical properties of the matrix; the cured epoxy resin system has excellent thermal stability, flame retardance and mechanical properties, and has excellent popularization and application prospects.

The invention relates to a PVB (Polyvinyl Butyral) film for PDLC (Polymer Dispersed Liquid Crystal) dimming glass, a preparation method and the PDLC dimming glass, and belongs to the technical field of dimming glass. The PVB film for the PDLC dimming glass comprises PVB resin and a plasticizer, at least one end group of the plasticizer is a benzoate group, and the plasticizer belongs to benzoate. Through molecular structure design, the main chain of the plasticizer can be a polyether type [-CH2-CHY-O-] n chain segment or a polyol skeleton, and meanwhile, benzoate groups or specific end group structures (such as branched chain alkyl, aromatic hydrocarbon and the like) are introduced, so that the interaction (such as hydrogen bond damage, dipole interaction, pi-pi accumulation and the like) between the plasticizer and PVB resin is enhanced, and the plasticizer can be used for preparing PVB resin. By introducing structures such as branched chains and aromatic rings, the steric hindrance and rigidity of molecules are greatly improved, and migration and precipitation phenomena of the plasticizer in the PVB film are effectively inhibited.